Package gov.llnl.gnem.apps.coda.calibration.service.impl.processing

Class SyntheticCodaModel

java.lang.Object

gov.llnl.gnem.apps.coda.calibration.service.impl.processing.SyntheticCodaModel

@Component
public class SyntheticCodaModel
extends Object

Constructor Summary

Constructors

Constructor	Description
SyntheticCodaModel()

Method Summary

Modifier and Type	Method	Description
double	getDistanceFunction(double value0, double value1, double value2, double distance)
double	getPointAtTimeAndDistance(SharedFrequencyBandParameters params, double measurementtime, double distance)	Get the value of the Empirical Synthetic Envelope at a specific distance and measurement time
Double	getSyntheticPointAtTime(double gr, double br, double t)	log10(Ac(t)) = log10(A0) -gamma(r)*log10(t) + b(r) * t * log10(e)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SyntheticCodaModel

public SyntheticCodaModel()

Method Details

getSyntheticPointAtTime

public Double getSyntheticPointAtTime(double gr,
 double br,
 double t)

log10(Ac(t)) = log10(A0) -gamma(r)*log10(t) + b(r) * t * log10(e)

Parameters:

gr - - the gamma(r) term: g(r) = g0 - g1/(g2+dist)

br - - the b(r) term: b0 - b1/(b2+dist)

t - - time in seconds from the phase start time

Returns:

log10(Amplitude) Note this method returns a point on the synthetic envelope to recover the full envelope use: for (ii = 1; ii < npts; ii++){ t = tstart + ii*dt; log10Ac(ii) = getSyntheticPointAtTime(gr,br,t); }

getDistanceFunction

public double getDistanceFunction(double value0,
 double value1,
 double value2,
 double distance)

getPointAtTimeAndDistance

public double getPointAtTimeAndDistance(SharedFrequencyBandParameters params,
 double measurementtime,
 double distance)

Get the value of the Empirical Synthetic Envelope at a specific distance and measurement time

Parameters:

params - - a SharedFrequencyBandParameters containing the required v0,v1,v2, g0,g1,g2 and b0,b1,b2 values

distance - - the source-receiver distance in kilometers

measurementtime - - the time in seconds after the start of the coda

Returns:

the amplitude value at that point